Question: From when and until when was Abigail Adams Second Lady of the United States?
Paraphrase: On which time period did Abigail Adams serve as the Second Lady of the US?
SPARQL (Wikidata): SELECT ?value1 ?value2 WHERE { wd:Q206191 p:P39 ?s . ?s ps:P39 wd:Q280808 . ?s pq:P580 ?value1 . ?s pq:P582 ?value2 }